机械工程设计中一,般都采用皮带机构、齿轮机构或凸轮机构(实际上它们只是四连杆机构的一种特殊形式),而不愿采用四连杆机构,去实现运动学和动力学的要求。其原因之一:四连杆机构虽然有许多优点,但它的运动分析和动力分析太复杂、太繁琐。设计四连杆机构时,首先要计算的是,各构件的速度和加速度,因为四连杆机构的振动、 Mechanical engineering design, the general use of belt agencies, gear agencies or cam agencies (in fact they are only a four-bar linkage of a special form), rather than using four-bar linkage to achieve kinematics and dynamics Claim. One of the reasons: Although the four-bar linkage has many advantages, but its motion analysis and dynamic analysis is too complicated and cumbersome. Four-bar linkage design, the first thing to be calculated is that the speed and acceleration of the components, because the four-bar linkage vibration,